Effect of amphiphile chain length on wet foam stability of porous ceramics

Sarkar, Naboneeta; Park, Jung Gyu; Mazumder, Sangram; Pokhrel, Ashish; Aneziris, Christos G.; Kim, Ik Jin

doi:10.1016/j.ceramint.2014.11.089

Cited by 26 publications

(24 citation statements)

References 12 publications

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“…Unlike in metallic or polymeric products, pores have been traditionally avoided in ceramic components because of their inherently brittle nature [3,4]. However, porous ceramics have become increasingly essential, especially for use in environments involving high temperatures, extensive wear and corrosive media [5,6].…”

Section: Introductionmentioning

confidence: 99%

Porous Ceramics

Sarkar¹,

Kim²

2015

Advanced Ceramic Processing

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The unique chemical composition and microstructure of porous ceramics enable the ceramic products used in a number of applications such as filtration of molten metals and hot corrosive gases, high-temperature thermal insulation, support for catalytic reactions, filtration of diesel engine exhaust gases, etc. These applications take advantage of special characteristics of porous ceramics such as low thermal mass, low thermal conductivity, controlled permeability, high surface area, low density, and high specific strength. In this chapter, we emphasize on direct foaming method, a simple and versatile approach that allows fabrication of porous ceramics with tailored microstructure along with distinctive properties. Foam stability is achieved upon controlled addition of amphiphiles to the colloidal suspension, which induce in situ hydrophobization, allowing the wet foam to resist coarsening upon drying and sintering.

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Section: Introductionmentioning

confidence: 99%

Porous Ceramics

Sarkar¹,

Kim²

2015

Advanced Ceramic Processing

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“…The mechanical frothing facilitates air incorporation throughout the whole volume of suspension. Air content [27][28]32] was measured by calculating the percentage of volume increase of the suspension after foaming.…”

Section: Foaming and Foam Characterizationmentioning

confidence: 99%

“…The direct foaming method is a versatile method for porous ceramics synthesis, because of its simplicity, low cost, and versatility [27][28]. In our study, this process was applied to synthesize porous Al 2 TiO 5 using Al 2 O 3 and TiO 2 as raw materials, ZrO 2 /TiO 2 in 1:1 mole ratio for ZrTiO 4 phase and propyl gallate as a surface modifier.…”

Section: Introductionmentioning

confidence: 99%

Processing of particle stabilized Al2TiO5–ZrTiO4 foam to porous ceramics

Sarkar

Park

Mazumder

et al. 2015

Journal of the European Ceramic Society

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“…The direct foaming technique was employed for the synthesis of porous ceramics, using Al 2 O 3 and SiO 2 particles as raw materials and propyl gallate as a surface modifying agent [16]. In this process, an aqueous Al 2 O 3 suspension was first prepared and subjected to homogenization and de-agglomeration using a ball mill for at least 48 h. After that, propyl gallate as a surface modifier was added to the suspension in order to avoid destabilization of the suspension.…”

Section: Porous Ceramicsmentioning

confidence: 99%